CN102434633B - Transmission - Google Patents
Transmission Download PDFInfo
- Publication number
- CN102434633B CN102434633B CN201110251436.4A CN201110251436A CN102434633B CN 102434633 B CN102434633 B CN 102434633B CN 201110251436 A CN201110251436 A CN 201110251436A CN 102434633 B CN102434633 B CN 102434633B
- Authority
- CN
- China
- Prior art keywords
- wall portion
- linking department
- supporting surface
- frame
- lubricating grease
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000005540 biological transmission Effects 0.000 title abstract description 3
- 239000004519 grease Substances 0.000 claims description 78
- 230000001050 lubricating effect Effects 0.000 claims description 74
- 239000007787 solid Substances 0.000 claims description 23
- 239000010687 lubricating oil Substances 0.000 abstract 1
- 239000003921 oil Substances 0.000 abstract 1
- 238000007789 sealing Methods 0.000 description 13
- 238000010008 shearing Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000000969 carrier Substances 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005058 metal casting Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/44—Free-space packings
- F16J15/447—Labyrinth packings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Details Of Gearings (AREA)
- Retarders (AREA)
Abstract
A transmission is provided to improve generality and productivity by effectively controlling the leak of lubricating oil without using an oil seal. A first connection part(1) and a second connection part(2) are supported to be possible to rotate. A speed change part(3) is located between the first connection part and the second connection part. Housing accepts the first connection part, the second connection part, and the speed change part. The second connection part comprises a rotator which is supported in the housing to be possible to rotate after passing through a bearing. The second connection part comprises a sun gear uniting with a planetary gear.
Description
Technical field
The present invention relates to retarder iso-variable velocity device, what be related specifically to lubricating grease leakage prevents structure.
Background technique
In the transmission, one mate to gear injects lubricating grease.Further, in order to prevent this lubricating grease from spilling, the oil sealing of ring-type is provided with around the axle rotated.
Due to the gap of the surrounding of oil sealing stem shaft can be passed through, therefore, it is possible to stably prevent lubricating grease leakage.But, because oil sealing abuts with axle, therefore produce rotational resistance, preferred in mechanical efficiency, in addition, because oil sealing is the high parts of price comparison, therefore also unfavorable in cost of material.
To this, propose there is the speed changer (patent documentation 1) possessing the grease sealing structure not using oil sealing.
In this speed changer, possess the outstanding axle 16 in below, output shaft 24, be located at the gear portion 12 between them and receive their housing parts 14 etc. (label is based on the document).The outstanding axle 16 in below is given prominence to downwards from housing parts 14, and output shaft 24 is given prominence to upward from housing parts 14, and this speed changer is configured to spin axis towards vertical direction (longitudinal).The outstanding axle 16 in below is chimeric with the output shaft 30a of motor, and is supported to can rotates freely by the bearing of motor together with output shaft.
Further, in order to the lubricating grease preventing from falling from gear portion 12, splash flows out from the downside of housing parts 14, grease sealing structure 18 is provided with in housing parts 14 and the below part of giving prominence between axle 16.
Specifically, the microsize (clearance portion 32) being set as about 0.5mm between axle 16 is given prominence at housing parts 14 and below.Give prominence to axle 16 both sides at housing parts 14 and below, be adjacent to be provided with coaxially respectively annular portion 34,36 outstanding upward with this clearance portion 32.The annular portion 36 of the outstanding axle 16 in below is given prominence to upward relative to the annular portion 34 of housing parts 14.
Further, lubricating grease reservoir 38,40 is formed with respectively in the lower portion of the inner circumferential side of the lower portion of the outer circumferential side of the annular portion 34 of housing parts 14 and the annular portion 36 of below protuberance.Be formed at the place such as upper surface of each annular portion 34,36 and lubricating grease is guided to the domatic of lubricating grease reservoir 38,40.Guided to lubricating grease reservoir 38,40 from the lubricating grease of whereabouts, gear portion 12 etc. by annular portion 34,36 also to accumulate.
On the other hand, lubricating grease is the lubricant oil that the mobility of proterties in semi-solid is lower.Lubricating grease is non-Newtonian fluid, and its proterties changes according to the presence or absence of external force.Such as, when by driving, on lubricating grease, effect has a shearing force to speed changer, lubricating grease liquefied, thus mobility raises.When making the event resolves of shearing force when speed changer stopping, the mobility of lubricating grease reduces, and returns to the proterties of original semi-solid.
Patent documentation 1: Japanese Unexamined Patent Publication 2002-213621 publication
When the grease sealing structure of patent documentation 1, because speed changer is premised on longitudinal, therefore lack versatility.Such as, when lateral gear, lubricating grease reservoir 38,40, also towards transverse direction, becomes and is difficult to storing lubricating grease.In addition, annular portion 36 guide to lubricating grease reservoir 38 lubricating grease in become obstruction on the contrary.When lubricating grease is set in the gap between annular portion 34,36 and wheel carrier 20, more difficult lubricating grease is guided to lubricating grease reservoir 38, the lubricating grease that therefore mobility reduces easily enters clearance portion 32 along annular portion 34,36, thus causes lubricating grease to flow out.In addition, also there is the disadvantage of the processing difficulties of annular portion 36.
Summary of the invention
Therefore, the object of the present invention is to provide a kind of speed changer, its structure is simple, and does not use oil sealing that lubricating grease just can be suppressed to spill, and versatility is also outstanding.
In order to reach above-mentioned purpose, in the present invention, utilize centrifugal force that the lubricating grease exposed from speed changing portion under the state that mobility is high is dispersed to the space fallen in around axis, and solidify at described position.
Specifically, speed changer of the present invention comprises: the first linking department and the second linking department, and described first linking department and the second linking department are supported to rotate freely; Speed changing portion, described speed changing portion is located between described first linking department and described second linking department, and has multiple planetary pinion; And framework, described framework storage described first linking department, described second linking department and described speed changing portion, be injected with lubricating grease at described speed changing portion.
Described second linking department possesses: the solid of rotation being supported on described framework via bearing in rotatable mode; And arrange coaxially and the sun gear engaged with described planetary pinion with described solid of rotation.And, between described sun gear and described bearing, spin axis direction is provided with the first restriction wall portion and the second restriction wall portion separated from one anotherly, and described first restriction wall portion and described second restriction wall portion are stretched out towards described solid of rotation from described framework throughout complete cycle.
That is, in this speed changer, limit wall portion demarcate between speed changing portion and the second linking department by first, planetary pinion is outstanding to speed changing portion side from the opening of the central authorities of the first restriction wall portion.And, liftoffly with the first limiting wall part on spin axis direction be provided with the second restriction wall portion, therefore the second linking department side of framework region by first restriction wall portion and second restriction wall portion mark off come, define outside radial direction with the space (annulus) faced by the fore-end of solid of rotation.This annulus by the opening of the first restriction wall portion with the regional connectivity of speed changing portion.
The lubricating grease injecting speed changing portion, is easily gone out to the second linking department side leakage by opening during mobility rising in the driving by speed changer.Due to solid of rotation High Rotation Speed, the lubricating grease therefore spilt along solid of rotation was subject to centrifugal force and disperses in annulus before crossing the second restriction wall portion.In annulus, owing to also not having shearing force effect when driving, the lubricating grease therefore lodging in this place solidifies and staticization.Therefore, it is possible to speed changer towards independently effectively preventing lubricating grease from spilling.
And then, preferably, described solid of rotation has with described sun gear continuous print minor diameter part and via stepped part and described minor diameter part continuously and the diameter large-diameter portion larger than described minor diameter part, described stepped part is presented axially in the first restriction wall portion and second and limits between wall portion.
Like this, because the centrifugal force of large-diameter portion is larger than the centrifugal force of minor diameter part, therefore, it is possible to make the lubricating grease spilt along solid of rotation stably disperse in annulus.
More specifically, described speed changing portion possesses and to arrange coaxially with described solid of rotation and to be supported to rotatable wheel carrier.Described wheel carrier has orthogonal with spin axis and that the first supporting surface towards described second linking department side and the periphery from described first supporting surface are vertically outstanding multiple rest pins.Described framework possesses the first frame of receiving described first linking department side and the described second linking department side of storage and is assembled in the second frame of described first frame.
Described first restriction wall portion is located at described second frame.The described first linking department side of described first restriction wall portion is provided with second supporting surface parallel with described first supporting surface.Further, described planetary pinion is plugged in described rest pin, and is clamped and be supported between described first supporting surface and described second supporting surface.
By so forming speed changer, the first restriction wall portion can be utilized between wheel carrier and framework to sandwich planetary pinion, wheel carrier is supported to and can rotates freely centered by spin axis, each planetary pinion can be supported to and freely can revolve round the sun centered by spin axis.Therefore, the structure of wheel carrier can be made to become simple compared with planetary pinion being assembled in the existing product of wheel carrier, also can easily assemble.
And then this speed changer also can comprise the assembling part formed with described framework split, and form described second restriction wall portion by described assembling part.
Because above-mentioned annulus is by the structure of sidetracking sky in hole, be therefore difficult to be integrally formed in framework.But, if assembling forms the second restriction wall portion as dividing the assembling part of body component in framework, easily annulus can be formed.
Such as, the embedded hole opened wide to the side contrary with described first frame is formed at described second frame.Described assembling part is formed as the toroidal with the outside dimension roughly the same with described bearing.By described assembling part, described bearing to be installed on described second frame according to this order from the open side mode be embedded in described embedded hole.Further, the part on the described rotation side of described second restriction wall portion is separated from described bearing.
Like this, just annulus can be formed simply by means of only assembling part and bearing being embedded successively and be installed on embedded hole.Can prevent from producing rotational resistance between assembling part and bearing.
Especially, preferred described lubricating grease adopts denseness to be the lubricating grease of more than 1.
Like this, such as, no matter that speed changer is horizontal or longitudinal, the lubricating grease lodging in annulus stably can both be held in annulus.
As discussed above, according to the present invention, can provide a kind of speed changer, its structure is simple, and does not use oil sealing just can effectively suppress lubricating grease to spill, therefore versatility and productivity outstanding.
Accompanying drawing explanation
Fig. 1 is the stereogram of the summary of the speed changer that present embodiment is shown.In order to illustrate internal structure, eliminate a part for framework.
Fig. 2 is the schematic cross sectional view of speed changer.
Fig. 3 is the exploded perspective view of the assembled state of a part for illustration of speed changer.
Fig. 4 is the stereogram of the summary that assembling part is shown.
Fig. 5 is the schematic cross sectional view of the major component that speed changer is shown.
Fig. 6 is the schematic cross sectional view of the speed changer that another embodiment is shown.
Label declaration
1: the first linking department;
2: the second linking departments;
3: reduction part (speed changing portion);
4: framework;
9: the second bearings (bearing);
21: input part (solid of rotation);
21a: minor diameter part;
21b: large-diameter portion;
21c: support;
21d: stepped part;
31: the first wheel carriers;
35: the second wheel carriers;
35b: the first supporting surface;
35c: the second rest pin;
36: the second planetary pinions;
37: the second internal-gears;
38: secondary sun wheel;
41: the first frames;
42: the second frames;
43: framework base portion;
43a: large hole, footpath portion;
43b: diameter holes portion;
43c: circular open;
45: the first restriction wall portion;
46: the second supporting surfaces;
47: annulus;
50: assembling part;
51: the second restriction wall portion;
A: spin axis.
Embodiment
Below, embodiments of the present invention are explained based on accompanying drawing.Wherein, the following description is only illustrated in essence and is illustrated, the present invention is not limited to this application thing or this purposes.
In fig. 1 and 2, application retarder of the present invention (speed changer) is shown.This retarder is formed by by lower component etc.: the first linking department 1 rotated centered by spin axis A and the second linking department 2, be located in the framework 4 of reduction part 3 (speed changing portion) between them and storage the first linking department 1, second linking department 2 and reduction part 3.In addition, the retarder of present embodiment is two-stage type speed reducer, is provided with gear mechanism 3a, 3b of two-stage at speed changing portion.
Framework 4 is metal works of hollow circuit cylinder block shape, is made up of the first frame 41 of storage first linking department 1 side and the second frame 42 of storage the second linking department 2 side.First frame 41 and the second frame 42 each other front and back are assembled into one involutoryly.For convenience of description, before where necessary first linking department 1 side in spin axis A direction being illustrated as, after the second linking department 2 side is illustrated as.
First frame 41 has the first cylindric surrounding wall portion 41a and blocks the end wall 41b of opening of front side of the first surrounding wall portion 41a, offers axis hole 41c at the central part of end wall 41b.
The axle base portion 1b that first linking department 1 has output shaft 1a and axially arranges continuously along it from output shaft 1a.Output shaft 1a gives prominence to laterally from axis hole 41c, and axle base portion 1b is supported on the first frame 41 via clutch shaft bearing 5 in rotatable mode.Oil sealing 6 is provided with between the first linking department 1 and axis hole 41c.
Reduction part 3 is made up of the first gear mechanism 3a of previous stage and the second gear mechanism 3b of rear stage.The lubricating grease (details of lubricating grease describes later separately) as lubricant oil is injected with in reduction part 3.
First gear structure 3a has: the first wheel carrier 31 of hollow and annular, and the axle base portion 1b of itself and the first linking department 1 is arranged integratedly; Three first planet gears 32,32,32, they are circumferentially configured in the periphery of the first wheel carrier 31 equably; And the first internal-gear 33 of ring-type, engage with each first planet gear 32 outside its radial direction being configured at the first wheel carrier 31.In addition, the basic structure of the first wheel carrier 31 is identical with existing product.
The first rest pin 31a that each first planet gear 32 is supported in the first wheel carrier 31 via two ends is supported on the first wheel carrier 31 in rotatable mode, thus freely can revolve round the sun centered by spin axis A.Each first planet gear 32 is incorporated in the inside of the first wheel carrier 31, and a part for each first planet gear 32 is exposed to outside from each window portion 31b at three positions of the side face being opened in the first wheel carrier 31.The rearward end (part of rib) of the first wheel carrier 31 is supported on framework 4 via intermediate bearing 7 in rotatable mode.In addition, the level and smooth bearing surface 31c orthogonal with spin axis A is formed with in the rearward end (parts of central authorities) of the first wheel carrier 31.
First internal-gear 33 is embedded in the first frame 41 and is supported to rotate.Further, inside the radial direction of the first wheel carrier 31, first sun gear 34 of the second gear mechanism 3b is configured with in the mode engaged with each first planet gear 32.
Also as shown in Figure 3, the second gear mechanism 3b, except the first sun gear 34, also has: roughly discoid second wheel carrier 35 (wheel carrier), and itself and the first sun gear 34 are set to one; Three the second planetary pinions 36,36,36, they are circumferentially configured at the periphery of the second wheel carrier 35 equably; And the second internal-gear 37 of ring-type, engage with each second planetary pinion 36 outside its radial direction being configured at the second wheel carrier 35.
The level and smooth bearing surface 35a orthogonal with spin axis A is provided with in the part of the front side of the second wheel carrier 35.This bearing surface 35a therebetween via the thrust-bearing 8a of annular plate-like by the bearing surface 31c of support in the first wheel carrier 31.In addition, the level and smooth first supporting surface 35b orthogonal with spin axis A is provided with in the part of the rear side of the second wheel carrier 35.Each second planetary pinion 36 single armed is supported to rotatable second rest pin 35c vertically to give prominence to from the periphery of the first supporting surface 35b and the first supporting surface 35b.
Second internal-gear 37 is embedded in the second frame 42 and is supported to rotate.Intermediate bearing 7 is clamped with between the second internal-gear 37 and the first internal-gear 33.Further, inside the radial direction of the second wheel carrier 35, the secondary sun wheel 38 of the second linking department 2 is configured with in the mode engaged with each second planetary pinion 36.
Second linking department 2 also has the columned input part 21 (solid of rotation) of multilayer being set to one at the rear of secondary sun wheel 38 and this secondary sun wheel 38 except secondary sun wheel 38.Specifically, input part 21 has the large-diameter portion 21b larger than this minor diameter part 21a with secondary sun wheel 38 continuous print minor diameter part 21a, diameter and the diameter support 21c larger than this large-diameter portion 21b.The stepped part 21d with the step surface roughly orthogonal with spin axis A is defined between minor diameter part 21a with large-diameter portion 21b.In addition, step surface also can be the plane of inclination tilted from minor diameter part 21a towards large-diameter portion 21b.
The axle being provided with the rotating driving devices such as electric motor at the rear end part of input part 21 inserts and the axle assembly department 22 fixed.Output shaft 1a and axle base portion 1b, the first wheel carrier 31, first internal-gear 33, first sun gear 34, second wheel carrier 35, second internal-gear 37, secondary sun wheel 38, input part 21 all configure coaxially with spin axis A.
As shown in Figure 2, second frame 42 is the metal casting product in substantially cylindrical shape, and have: the roughly cylindric framework base portion 43 of heavy wall: roughly cylindric second week wall portion 44, it stretches out from the outer periphery of framework base portion 43 vertically at the fore-end of framework base portion 43; And the first circular restriction wall portion 45, it stretches out inside radial direction from the inner circumference edge of framework base portion 43.Second week wall portion 44 and the first surrounding wall portion 41a are fixed as one involutoryly.
Also as shown in Figure 3, in the front side of the first restriction wall portion 45 at framework base portion 43 place, level and smooth second supporting surface 46 parallel with the first supporting surface 35b of the second wheel carrier 35 is provided with.That is, the first restriction wall portion 45 possesses the function of support second wheel carrier 35.Further, each second planetary pinion 36 is inserted on each second rest pin 35c, utilizes each second planetary pinion 36 of the second supporting surface 46 support across the thrust-bearing 8b of annular plate-like.Like this, the second wheel carrier 35 and each second planetary pinion 36 are sandwiched between the first wheel carrier 31 and the second frame 42 via a pair thrust-bearing 8a, 8b.Thus, the second wheel carrier 35 is supported to rotate freely centered by spin axis A, and each second planetary pinion 36 is supported to freely to revolve round the sun centered by running shaft A.
By formation like this, the existing wheel carrier of structural rate of the second wheel carrier 35 can be made simple.Also can easily assemble, therefore productivity improves.
The inner side of framework base portion 43 is formed as the multistage tubular along with expanding towards rear.Specifically, the hole portion, large footpath 43a (embedded hole) of the cylindrical shape to rear open is formed at framework base portion 43.The internal diameter of hole portion, large footpath 43a is set to roughly the same with the external diameter of the second bearing 9 (bearing).Further, hole portion, large footpath 43a is continuously and be formed with the diameter holes portion 43b of the diameter cylindrical shape less than this hole portion, large footpath 43a coaxially with this.The base section of the front side of this diameter holes portion 43b is made up of the first restriction wall portion 45.Diameter holes portion 43b is by being opened in the regional connectivity of the circular open 43c of its central part and the reduction part 3 with its front.
The second bearing 9, assembling part 50 is embedded with successively from open side in hole portion, large footpath 43a.Described second bearing 9 and assembling part 50 are installed on framework base portion 43 by back-up ring 10 in the mode that can not be pulled out.Further, the support 21c of input part 21 is embedded in the second bearing 9.That is, under the state making secondary sun wheel 38 outstanding to reduction part 3 side from circular open 43c, input part 21 is supported on the second frame 42 via the second bearing 9 in rotatable mode.The first restriction end of wall portion 45 and the minor diameter part 21a of input part 21 is across small opposed with gap.
Figure 4 illustrates assembling part 50.Assembling part 50 is punch process product of sheet metal, and it is formed as the toroidal with the outside dimension roughly the same with the second bearing 9.Assembling part 50 has: the clamping part 50a of outer circumferential side, and it is clamped and is supported between the second frame 42 and the second bearing 9; The terminal part 50b of inner circumferential side, it is positioned at the position of staggering substantially in parallel with clamping part 50a; And rake 50c, it is connected with clamping part 50a and terminal part 50b and between them.
The mode that assembling part 50 is separated from the second bearing 9 with terminal part 50b and rake 50c (part of inner circumferential side) is assembled in framework base portion 43, not relate to (with reference to figure 5) with the partially coherent of input part 21 side of the second bearing 9.In addition, terminal part 50b is opposed with the large-diameter portion 21b of input part 21 across small gap.By like this, thus prevent assembling part 50 from contacting with the second bearing 9 or input part 21 and producing rotational resistance.By being assembled on framework base portion 43 by assembling part 50, thus form the second restriction wall portion 51.
Wall portion 51 is limited by the first restriction wall portion 45 and second that arranges separately before and after at diameter holes portion 43b, in other words, by utilizing the first restriction wall portion 45 and the second restriction wall portion 51, the both sides, front and back of diameter holes portion 43b are divided out, thus define annulus 47 at framework base portion 43, this annulus 47 by circular open 43c with the regional connectivity of reduction part 3, and annularly recessed outside radial direction in the face of ground with the fore-end of input part 21.
Because annulus 47 is formed as, by the structure of sidetracking sky in hole, being therefore difficult to be integrally formed in framework base portion 43, but divide the assembling part 50 of body component by assembling on framework base portion 43, thus can easily form annulus 47.
In addition, between reduction part 3 and input part 21, one is provided with oil sealing to prevent lubricating grease leakage.On the other hand, in this retarder, consider the proterties of lubricating grease, oil sealing is not set also can prevents lubricating grease leakage even if work out.
First, by forming above-mentioned annulus 47 at framework base portion 43, independently the lubricating grease spilt from reduction part 3 can stably be lodged in annulus 47 with the setting direction of retarder, can effectively prevent lubricating grease from escaping to outside framework 4.
(in the figure lubricating grease is illustrated with label G) as shown in Figure 5, retarder is driven, when to be made the mobility of lubricating grease improve by shear action, lubricating grease easily escapes to the second linking department 2 side along input part 21 by circular open 43c.Further, when lubricating grease spills, input part 21 rotates at high speed, and therefore lubricating grease was subject to centrifugal force and disperses in the annulus 47 be formed at outside radial direction before the terminal part 50b crossing the second restriction wall portion 51.
In annulus 47, owing to not acted on shearing force when driving retarder, the lubricating grease therefore accumulated in wherein has solidified and staticization.By the effect of centrifugal force, lubricating grease balance from the depths of annulus 47 can be made to accumulate to come in well, lubricating grease can be made to be attached to framework base portion 43 firmly, be also favourable from this point.
By forming step at input part 21, more stably lubricating grease leakage can be prevented.Specifically, stepped part 21d is presented axially in the first restriction wall portion 45 and second and limits position between wall portion 51.The centrifugal force of large-diameter portion 21b is larger than the centrifugal force of minor diameter part 21a, and the lubricating grease therefore spilt along input part 21 can stably disperse in annulus 47.
Preferably, observe from the direction of spin axis A, the end of the first restriction wall portion 45 is made to be positioned at outer periphery position in the inner part than large-diameter portion 21b, thus the size making the diameter of circular open 43c be formed as between the diameter of minor diameter part 21a and the diameter of large-diameter portion 21b.Like this, the lubricating grease spilt from circular open 43c is by the step surface support of stepped part 21d, therefore, it is possible in the gap preventing lubricating grease from directly entering between the second restriction wall portion 51 and large-diameter portion 21b, lubricating grease can be made more stably to disperse in annulus 47.
Preferred lubricating grease adopts the lubricating grease with predetermined proterties.Specifically, preferred denseness is the lubricating grease of more than 1, and more preferably denseness is the lubricating grease of more than 2.Denseness is the index of the proterties representing lubricating grease, can measure based on JIS standard (JIS K 2220).The numerical value of denseness is larger, then lubricating grease is in harder proterties.
If denseness is the lubricating grease of more than 1, although also relevant with the kind of lubricating grease, no matter make annulus 47 towards horizontal or reverse, lubricating grease does not all move and staticization substantially, stably can keep lubricating grease under common service condition.On the other hand, when consistency of grease is less than 1, according to the kind of lubricating grease and annulus 47 towards difference, there is the possibility that cannot keep lubricating grease.If denseness is more than 2, then substantially independently in annulus 47, stably can keep lubricating grease with the kind of lubricating grease.
Speed changer of the present invention is not limited to above-mentioned mode of execution, also comprises various structures in addition.
As shown in Figure 6, the speed changer of one-level type can be also applied to.In this case, without the need to the first wheel carrier 31 etc.Therefore, the second wheel carrier 35 is arranged on axle base portion 1b, instead of is arranged on the first wheel carrier 31.Other main structure is identical with above-mentioned mode of execution, and also the description thereof will be omitted to be therefore marked with identical label to the parts playing said function.
First linking department 1 is not necessarily consistent with spin axis with the second linking department 2.Also each spin axis can be made orthogonal by sandwiched bevel gear etc.Assembling part 50 also can be block parts.
Industrial utilizability
Speed changer of the present invention can be applied to the speed changer being equipped on the various industry equipment such as industrial robot, wrapping machine.
Claims (7)
1. a speed changer, it comprises:
First linking department and the second linking department, described first linking department and the second linking department are supported to rotate freely;
Speed changing portion, described speed changing portion is located between described first linking department and described second linking department, and has multiple planetary pinion; And
Framework, described framework storage described first linking department, described second linking department and described speed changing portion,
Lubricating grease is injected with at described speed changing portion,
The feature of this speed changer is,
Described second linking department possesses:
Be supported on the solid of rotation of described framework in rotatable mode via bearing; And
Arrange coaxially with described solid of rotation and the sun gear engaged with described planetary pinion,
Between described sun gear and described bearing, spin axis direction is provided with the first restriction wall portion and the second restriction wall portion separated from one anotherly, described first restriction wall portion and described second restriction wall portion are stretched out towards described solid of rotation from described framework throughout complete cycle
Described first the restriction end of wall portion and the minor diameter part of described solid of rotation is across small opposed with gap, and described second to limit the terminal part of wall portion opposed with the large-diameter portion of described solid of rotation across small gap,
Small gap between the end of described first restriction wall portion and the minor diameter part of described solid of rotation is configured to: described lubricating grease disperses to limiting wall portion and described second described first via the described first small gap limited between the end of wall portion and the minor diameter part of described solid of rotation and limits in the annulus formed between wall portion.
2. speed changer according to claim 1, wherein,
Described solid of rotation has:
With described sun gear continuous print minor diameter part; And
Via stepped part and described minor diameter part continuously and the diameter large-diameter portion larger than described minor diameter part,
Described stepped part is presented axially in the first restriction wall portion and second and limits between wall portion.
3. speed changer according to claim 2, wherein,
Described speed changing portion possesses and to arrange coaxially with described solid of rotation and to be supported to rotatable wheel carrier,
Described wheel carrier has:
Orthogonal with spin axis and towards the first supporting surface of described second linking department side; And
From multiple rest pins that the periphery of described first supporting surface is vertically outstanding,
Described framework possesses:
Receive the first frame of described first linking department side; And
Receive described second linking department side and be assembled in the second frame of described first frame,
Described first restriction wall portion is located at described second frame,
The described first linking department side of described first restriction wall portion is provided with second supporting surface parallel with described first supporting surface,
Described planetary pinion is plugged in described rest pin, and is clamped and be supported between described first supporting surface and described second supporting surface.
4. speed changer according to claim 3, wherein,
This speed changer comprises the assembling part formed with described framework split,
Described second restriction wall portion is formed by described assembling part.
5. speed changer according to claim 4, wherein,
The embedded hole opened wide to the side contrary with described first frame is formed at described second frame,
Described assembling part is formed as the toroidal with the outside dimension roughly the same with described bearing,
Described assembling part, described bearing are installed in described second frame with the order according to assembling part, bearing from the open side mode be embedded in described embedded hole,
The part on the described rotation side of described second restriction wall portion is separated from described bearing.
6. speed changer according to claim 1, wherein,
Described speed changing portion possesses and to arrange coaxially with described solid of rotation and to be supported to rotatable wheel carrier,
Described wheel carrier has:
Orthogonal with spin axis and towards the first supporting surface of described second linking department side; And
From multiple rest pins that the periphery of described first supporting surface is vertically outstanding,
Described framework possesses:
Receive the first frame of described first linking department side; And
Receive described second linking department side and be assembled in the second frame of described first frame,
Described first restriction wall portion is located at described second frame,
The described first linking department side of described first restriction wall portion is provided with second supporting surface parallel with described first supporting surface,
Described planetary pinion is plugged in described rest pin, and is clamped and be supported between described first supporting surface and described second supporting surface.
7. the speed changer according to any one in claim 1 to 6, wherein,
Described lubricating grease adopts denseness to be the lubricating grease of more than 1.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010192762A JP5508197B2 (en) | 2010-08-30 | 2010-08-30 | transmission |
| JP2010-192762 | 2010-08-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102434633A CN102434633A (en) | 2012-05-02 |
| CN102434633B true CN102434633B (en) | 2015-02-04 |
Family
ID=45902422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110251436.4A Expired - Fee Related CN102434633B (en) | 2010-08-30 | 2011-08-29 | Transmission |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP5508197B2 (en) |
| KR (1) | KR101321627B1 (en) |
| CN (1) | CN102434633B (en) |
| TW (1) | TWI461617B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6452281B2 (en) * | 2013-10-04 | 2019-01-16 | 住友重機械工業株式会社 | Shaft member support structure |
| JP6124767B2 (en) * | 2013-10-28 | 2017-05-10 | 住友重機械工業株式会社 | Gear unit series |
| JP6207735B2 (en) * | 2014-06-02 | 2017-10-04 | 株式会社ハーモニック・ドライブ・システムズ | Rotary actuator |
| JP6482809B2 (en) * | 2014-09-29 | 2019-03-13 | 日本電産シンポ株式会社 | Transmission and drive device |
| JP6372752B2 (en) * | 2014-10-16 | 2018-08-15 | 日本電産シンポ株式会社 | Traction power transmission device |
| JP6491456B2 (en) * | 2014-10-29 | 2019-03-27 | 日本電産シンポ株式会社 | Traction power transmission device |
| CN104712708A (en) * | 2015-01-28 | 2015-06-17 | 周正英 | Multifunctional planet gear speed reducer |
| JP6650724B2 (en) * | 2015-10-19 | 2020-02-19 | 日本電産シンポ株式会社 | transmission |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101566218A (en) * | 2008-04-24 | 2009-10-28 | Smc株式会社 | Automatic speed reduction ratio switching apparatus |
| CN201535236U (en) * | 2009-11-24 | 2010-07-28 | 泰星减速机股份有限公司 | Wind power generation planetary speed increaser |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6061558U (en) * | 1983-10-05 | 1985-04-30 | トヨタ自動車株式会社 | Final reduction gearing |
| JP2002213621A (en) * | 2001-01-16 | 2002-07-31 | Sumitomo Heavy Ind Ltd | Grease-sealing structure of transmission |
| JP4351817B2 (en) * | 2001-12-07 | 2009-10-28 | 日本電産シンポ株式会社 | Small planetary gear reducer |
| JP2005248422A (en) * | 2004-03-01 | 2005-09-15 | Nidec-Shimpo Corp | Sheet shutter driving device |
| JP2006329269A (en) | 2005-05-24 | 2006-12-07 | Nidec-Shimpo Corp | Lubricant filling structure for planetary gear reducer |
| JP2007056884A (en) * | 2005-08-22 | 2007-03-08 | Nidec-Shimpo Corp | Lubricant sealing structure for planetary gear reducer |
| TWM309627U (en) * | 2006-09-26 | 2007-04-11 | Li Ming Machinery Co Ltd | Anti oil leak structure of reducer motor |
| JP4380699B2 (en) * | 2006-12-28 | 2009-12-09 | トヨタ自動車株式会社 | Planetary gear device and automatic transmission |
| JP5064272B2 (en) * | 2008-03-18 | 2012-10-31 | 日本電産シンポ株式会社 | Grease leakage prevention structure for unit gear unit |
| CN101603585B (en) * | 2009-06-29 | 2011-08-17 | 浙江通力重型齿轮股份有限公司 | Vertical type dry well mounting and sealing mechanism of speed reducer |
-
2010
- 2010-08-30 JP JP2010192762A patent/JP5508197B2/en not_active Expired - Fee Related
-
2011
- 2011-08-29 CN CN201110251436.4A patent/CN102434633B/en not_active Expired - Fee Related
- 2011-08-29 KR KR1020110086610A patent/KR101321627B1/en active IP Right Grant
- 2011-08-30 TW TW100131063A patent/TWI461617B/en not_active IP Right Cessation
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101566218A (en) * | 2008-04-24 | 2009-10-28 | Smc株式会社 | Automatic speed reduction ratio switching apparatus |
| CN201535236U (en) * | 2009-11-24 | 2010-07-28 | 泰星减速机股份有限公司 | Wind power generation planetary speed increaser |
Non-Patent Citations (2)
| Title |
|---|
| JP特开2002-213621A 2002.07.31 * |
| JP特开2007-56884A 2007.03.08 * |
Also Published As
| Publication number | Publication date |
|---|---|
| KR101321627B1 (en) | 2013-10-23 |
| JP5508197B2 (en) | 2014-05-28 |
| KR20120022063A (en) | 2012-03-09 |
| TWI461617B (en) | 2014-11-21 |
| CN102434633A (en) | 2012-05-02 |
| TW201211422A (en) | 2012-03-16 |
| JP2012047325A (en) | 2012-03-08 |
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